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Order–disorder transition of a rigid cage cation embedded in a cubic perovskite

Author

Listed:
  • Zhifang Shi

    (ShanghaiTech University)

  • Zheng Fang

    (ShanghaiTech University)

  • Jingshu Wu

    (ShanghaiTech University)

  • Yi Chen

    (ShanghaiTech University)

  • Qixi Mi

    (ShanghaiTech University)

Abstract

The structure and properties of organic–inorganic hybrid perovskites are impacted by the order–disorder transition, whose driving forces from the organic cation and the inorganic framework cannot easily be disentangled. Herein, we report the design, synthesis and properties of a cage-in-framework perovskite AthMn(N3)3, where Ath+ is an organic cation 4-azatricyclo[2.2.1.02,6]heptanium. Ath+ features a rigid and spheroidal profile, such that its molecular reorientation does not alter the cubic lattice symmetry of the Mn(N3)3− host framework. This order–disorder transition is well characterized by NMR, crystallography, and calorimetry, and associated with the realignment of Ath+ dipole from antiferroelectric to paraelectric. As a result, an abrupt rise in the dielectric constant was observed during the transition. Our work introduces a family of perovskite structures and provides direct insights to the order–disorder transition of hybrid materials.

Suggested Citation

  • Zhifang Shi & Zheng Fang & Jingshu Wu & Yi Chen & Qixi Mi, 2021. "Order–disorder transition of a rigid cage cation embedded in a cubic perovskite," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23917-z
    DOI: 10.1038/s41467-021-23917-z
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